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      <h1 class="mume-header" id="php%E7%88%AC%E8%99%AB%E6%8A%80%E6%9C%AF3">php&#x722C;&#x866B;&#x6280;&#x672F;3</h1>

<hr>
<h2 class="mume-header" id="%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%B1%95%E7%A4%BA">&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x5C55;&#x793A;</h2>

<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token operator">/</span><span class="token punctuation">[</span>a<span class="token operator">-</span>zA<span class="token operator">-</span>z<span class="token punctuation">]</span><span class="token operator">+</span><span class="token punctuation">:</span><span class="token comment">//[^\s]*/                //&#x5339;&#x914D;URL</span>
    <span class="token operator">/</span><span class="token operator">^</span><span class="token punctuation">(</span><span class="token punctuation">(</span>https<span class="token operator">|</span>http<span class="token operator">|</span>ftp<span class="token punctuation">)</span><span class="token operator">?</span><span class="token punctuation">:</span><span class="token comment">//)[^\s]+/     //&#x5339;&#x914D;URL&#x548C;FTP</span>
    <span class="token operator">/</span><span class="token punctuation">(</span>\<span class="token package">w</span><span class="token operator">+</span><span class="token punctuation">)</span><span class="token punctuation">:</span>\<span class="token operator">/</span>\<span class="token operator">/</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token operator">^</span><span class="token operator">/</span><span class="token punctuation">:</span><span class="token punctuation">]</span><span class="token operator">+</span><span class="token punctuation">)</span><span class="token punctuation">(</span><span class="token punctuation">:</span>\<span class="token package">d</span><span class="token operator">*</span><span class="token punctuation">)</span><span class="token operator">?</span><span class="token punctuation">(</span><span class="token punctuation">[</span><span class="token operator">^</span><span class="token shell-comment comment"># ]*)/     </span><span class="token comment">//&#x5339;&#x914D;URL&#x534F;&#x8BAE;&#x3001;&#x57DF;&#x3001;&#x7AEF;&#x53E3;&#x53CA;&#x76F8;&#x5BF9;&#x8DEF;&#x5F84;</span>
    <span class="token operator">/</span>\<span class="token package">w</span><span class="token punctuation">[</span><span class="token operator">-</span>\<span class="token package">w</span><span class="token punctuation">.</span><span class="token operator">+</span><span class="token punctuation">]</span><span class="token operator">*</span>@<span class="token punctuation">(</span><span class="token punctuation">[</span>A<span class="token operator">-</span>Za<span class="token operator">-</span>z0<span class="token operator">-</span><span class="token number">9</span><span class="token punctuation">]</span><span class="token punctuation">[</span><span class="token operator">-</span>A<span class="token operator">-</span>Za<span class="token operator">-</span>z0<span class="token operator">-</span><span class="token number">9</span><span class="token punctuation">]</span><span class="token operator">+</span>\<span class="token punctuation">.</span><span class="token punctuation">)</span><span class="token operator">+</span><span class="token punctuation">[</span>A<span class="token operator">-</span>Za<span class="token operator">-</span>z<span class="token punctuation">]</span><span class="token punctuation">{</span><span class="token number">2</span><span class="token punctuation">,</span><span class="token number">14</span><span class="token punctuation">}</span><span class="token operator">/</span>    <span class="token comment">//&#x5339;&#x914D;&#x90AE;&#x7BB1;&#x5730;&#x5740;</span>
</pre><h2 class="mume-header" id="%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E7%BB%93%E6%9E%84">&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;(&#x7ED3;&#x6784;)</h2>

<pre class="language-text">1. &#x539F;&#x5B50;
2. &#x5143;&#x5B57;&#x7B26;
3. &#x4FEE;&#x6B63;&#x7B26;
4. &#x9884;&#x5B9A;&#x4E49;&#x5B57;&#x7B26;
5. &#x7279;&#x6B8A;&#x5B57;&#x7B26;
6. &#x5206;&#x7EC4;&#x7B26;
7. &#x754C;&#x5B9A;&#x7B26;
8. &#x4FEE;&#x6B63;&#x7B26;
9. &#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x4F18;&#x5148;&#x7EA7;
</pre>
<hr>
<h3 class="mume-header" id="%E4%B8%80-%E5%8E%9F%E5%AD%90">&#x4E00;&#x3001;&#x539F;&#x5B50;</h3>

<table>
<thead>
<tr>
<th><strong>&#x539F;&#x5B50;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>&#x666E;&#x901A;&#x5B57;&#x7B26;</td>
<td>&#x53EF;&#x6253;&#x5370;&#x7684;&#x5B57;&#x7B26;&#xFF0C;&#x5728;&#x5C4F;&#x5E55;&#x53EF;&#x770B;&#x5230;&#x7684;&#x5B57;&#x7B26;&#xFF0C;&#x5982;&#x5927;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x6570;&#x5B57;&#x7B49;</td>
</tr>
<tr>
<td>&#x975E;&#x6253;&#x5370;&#x5B57;&#x7B26;</td>
<td>&#x5373;&#x5B58;&#x5728;&#x4F46;&#x4E0D;&#x53EF;&#x663E;&#x793A;&#x5B57;&#x7B26;&#xFF0C;&#x5982;&#x56DE;&#x8F66;&#x3001;&#x6362;&#x884C;&#x3001;&#x5236;&#x8868;&#x7B26;&#x7B49;</td>
</tr>
<tr>
<td>&#x81EA;&#x5B9A;&#x4E49;&#x5B57;&#x7B26;</td>
<td>&#x53EF;&#x4EE5;&#x662F;&#x4E00;&#x4E2A;&#xFF0C;&#x4E5F;&#x53EF;&#x4EE5;&#x662F;&#x96C6;&#x5408;&#xFF0C;&#x7528;&#x65B9;&#x62EC;&#x53F7;&apos;[ ]&apos;&#x5305;&#x8D77;&#x6765;</td>
</tr>
</tbody>
</table>
<h4 class="mume-header" id="1%E6%99%AE%E9%80%9A%E5%AD%97%E7%AC%A6">1.&#x666E;&#x901A;&#x5B57;&#x7B26;</h4>

<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>a-z</td>
<td>&#x5339;&#x914D;&#x5355;&#x4E2A;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;</td>
</tr>
<tr>
<td>A-Z</td>
<td>&#x5339;&#x914D;&#x5355;&#x4E2A;&#x5927;&#x5199;&#x5B57;&#x6BCD;</td>
</tr>
<tr>
<td>0-9</td>
<td>&#x5339;&#x914D;&#x5355;&#x4E2A;&#x6570;&#x5B57;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/a/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><h4 class="mume-header" id="2%E9%9D%9E%E6%89%93%E5%8D%B0%E5%AD%97%E7%AC%A6">2.&#x975E;&#x6253;&#x5370;&#x5B57;&#x7B26;</h4>

<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>\n</td>
<td>&#x5339;&#x914D;&#x4E00;&#x4E2A;&#x6362;&#x884C;&#x7B26;&#xFF0C;&#x7B49;&#x4EF7;&#x4E8E;&#xFF1A;\x0a</td>
</tr>
<tr>
<td>\r</td>
<td>&#x5339;&#x914D;&#x4E00;&#x4E2A;&#x56DE;&#x8F66;&#x7B26;&#xFF0C;&#x7B49;&#x4EF7;&#x4E8E;&#xFF1A;\x0d</td>
</tr>
<tr>
<td>\f</td>
<td>&#x5339;&#x914D;&#x4E00;&#x4E2A;&#x6362;&#x9875;&#x7B26;&#xFF0C;&#x7B49;&#x4EF7;&#x4E8E;&#xFF1A;\x0c</td>
</tr>
<tr>
<td>\t</td>
<td>&#x5339;&#x914D;&#x4E00;&#x4E2A;&#x5236;&#x8868;&#x7B26;&#xFF0C;&#x7B49;&#x4EF7;&#x4E8E;&#xFF1A;\x09</td>
</tr>
<tr>
<td>\v</td>
<td>&#x5339;&#x914D;&#x4E00;&#x4E2A;&#x5782;&#x76F4;&#x5236;&#x8868;&#x7B26;&#xFF0C;&#x7B49;&#x4EF7;&#x4E8E;&#xFF1A;\x0b</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\n/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 
    aaabbbcccdddeeefffggghhhiiijjjjkkkk&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><h4 class="mume-header" id="3%E8%87%AA%E5%AE%9A%E4%B9%89%E5%AD%97%E7%AC%A6">3.&#x81EA;&#x5B9A;&#x4E49;&#x5B57;&#x7B26;</h4>

<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[1234]</td>
<td>&#x5339;&#x914D;1&#x3001;2&#x3001;3&#x3001;4&#x6570;&#x5B57;</td>
</tr>
<tr>
<td>[0-9]</td>
<td>&#x5339;&#x914D;&#x6570;&#x5B57;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[a-z]</td>
<td>&#x5339;&#x914D;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[A-Z]</td>
<td>&#x5339;&#x914D;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]</td>
<td>&#x5339;&#x914D;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[a-z]/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><hr>
<h3 class="mume-header" id="%E4%BA%8C-%E5%85%83%E5%AD%97%E7%AC%A6">&#x4E8C;&#x3001;&#x5143;&#x5B57;&#x7B26;</h3>

<ul>
<li>&#x5143;&#x5B57;&#x7B26;&#x662F;&#x4FEE;&#x9970;&#x539F;&#x5B50;&#x5B57;&#x7B26;&#x7684;&#xFF0C;&#x53EF;&#x4EE5;&#x7406;&#x89E3;&#x4E3A;&#x539F;&#x5B50;&#x7684;&#x5B9A;&#x8BED;&#x6216;&#x9650;&#x5B9A;&#x6761;&#x4EF6;</li>
<li>&#x5143;&#x5B57;&#x7B26;&#x4E0D;&#x5141;&#x8BB8;&#x5355;&#x72EC;&#x4F7F;&#x7528;&#xFF0C;&#x5FC5;&#x987B;&#x914D;&#x5408;&#x539F;&#x5B50;&#xFF0C;&#x5171;&#x540C;&#x5DE5;&#x4F5C;</li>
</ul>
<p>( . ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C;&#x5339;&#x914D;&#x9664;&#x6362;&#x884C;&#x7B26;&#x4E4B;&#x5916;&#x7684;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5B57;&#x7B26;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>12.</td>
<td>&#x5339;&#x914D;&#x4E24;&#x4E2A;&#x6570;&#x5B57;&#xFF0C;&#x5728;&#x52A0;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5B57;&#x7B26;</td>
</tr>
<tr>
<td>zhu.</td>
<td>&#x5339;&#x914D;&#x4E24;&#x4E2A;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#xFF0C;&#x5728;&#x52A0;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5B57;&#x7B26;</td>
</tr>
<tr>
<td>OU.</td>
<td>&#x5339;&#x914D;&#x4E24;&#x4E2A;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#xFF0C;&#x5728;&#x52A0;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5B57;&#x7B26;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/12./&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk OUYANGKE OUYANGKE zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( | ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C;&#x5339;&#x914D;2&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x5206;&#x652F;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>12|67</td>
<td>&#x5339;&#x914D;12&#x548C;67</td>
</tr>
<tr>
<td>ou|zhu</td>
<td>&#x5339;&#x914D;ou&#x548C;zhu</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/12|67/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( [ ] ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C;&#x5339;&#x914D;&#x65B9;&#x62EC;&#x53F7;&#x5185;&#x6307;&#x5B9A;&#x7684;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x539F;&#x5B50;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[1234]</td>
<td>&#x5339;&#x914D;1&#x3001;2&#x3001;3&#x3001;4&#x6570;&#x5B57;</td>
</tr>
<tr>
<td>[0-9]</td>
<td>&#x5339;&#x914D;&#x6570;&#x5B57;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[a-z]</td>
<td>&#x5339;&#x914D;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[A-Z]</td>
<td>&#x5339;&#x914D;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]</td>
<td>&#x5339;&#x914D;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[1234]/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( [^ ] ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C; &#x5339;&#x914D;&#x9664;&#x65B9;&#x62EC;&#x53F7;&#x5185;&#x6307;&#x5B9A;&#x539F;&#x5B50;&#x4EE5;&#x5916;&#x7684;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x539F;&#x5B50;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[^1234]</td>
<td>&#x5339;&#x914D;&#x53BB;&#x9664;1&#x3001;2&#x3001;3&#x3001;4&#x6570;&#x5B57;</td>
</tr>
<tr>
<td>[^0-9]</td>
<td>&#x5339;&#x914D;&#x53BB;&#x9664;&#x6570;&#x5B57;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[^a-z]</td>
<td>&#x5339;&#x914D;&#x53BB;&#x9664;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[^A-Z]</td>
<td>&#x5339;&#x914D;&#x53BB;&#x9664;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
<tr>
<td>[^0-9a-zA-Z]</td>
<td>&#x5339;&#x914D;&#x53BB;&#x9664;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[^1234]/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( ^ ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C;&#x5339;&#x914D;&#x5B57;&#x7B26;&#x4E32;&#x5F00;&#x59CB;&#x4F4D;&#x7F6E;&#xFF0C;&#x4E00;&#x4E32;&#x5B57;&#x7B26;&#x4E32;&#xFF0C;&#x5FC5;&#x987B;&#x4ECE;&#x8FD9;&#x91CC;&#x5F00;&#x59CB;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>^1</td>
<td>&#x5339;&#x914D;&#x4ECE;1&#x6570;&#x5B57;&#x5F00;&#x59CB;</td>
</tr>
<tr>
<td>^[0-9]</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x96C6;&#x5408;&#x5F00;&#x59CB;</td>
</tr>
<tr>
<td>^[a-z]</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x5F00;&#x59CB;</td>
</tr>
<tr>
<td>^[A-Z]</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x5F00;&#x59CB;</td>
</tr>
<tr>
<td>^[0-9a-zA-Z]</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x5F00;&#x59CB;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/^[a-z]/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( $ ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C;&#x5339;&#x914D;&#x5B57;&#x7B26;&#x4E32;&#x7ED3;&#x675F;&#x4F4D;&#x7F6E;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]$</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x96C6;&#x5408;&#x7ED3;&#x675F;</td>
</tr>
<tr>
<td>[a-z]$</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x7ED3;&#x675F;</td>
</tr>
<tr>
<td>[A-Z]$</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x7ED3;&#x675F;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]$</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x7ED3;&#x675F;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[a-z]$/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><hr>
<h3 class="mume-header" id="%E4%B8%89-%E9%87%8F%E8%AF%8D%E9%99%90%E5%AE%9A%E7%AC%A6">&#x4E09;&#x3001;&#x91CF;&#x8BCD;&#xFF08;&#x9650;&#x5B9A;&#x7B26;&#xFF09;</h3>

<p>{n} &#x8868;&#x793A;&#x524D;&#x9762;&#x539F;&#x5B50;&#x51FA;&#x73B0;n&#x6B21;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]{3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;3&#x6B21;</td>
</tr>
<tr>
<td>[a-z]{3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;3&#x6B21;</td>
</tr>
<tr>
<td>[A-Z]{3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;3&#x6B21;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]{3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;3&#x6B21;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[0-9]{3}/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>{n,} &#x8868;&#x793A;&#x524D;&#x9762;&#x539F;&#x5B50;&#x51FA;&#x73B0;&#x4E0D;&#x5C11;&#x4E8E;n&#x6B21;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]{1,}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[a-z]{1,}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[A-Z]{1,}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]{1,}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[0-9]{1,}/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>{n,m} &#x8868;&#x793A;&#x524D;&#x9762;&#x539F;&#x5B50;&#x81F3;&#x5C11;&#x51FA;&#x73B0;n&#x6B21;&#xFF0C;&#x6700;&#x591A;&#x51FA;&#x73B0;m&#x6B21;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]{1,3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;3&#x6B21;</td>
</tr>
<tr>
<td>[a-z]{1,3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;3&#x6B21;</td>
</tr>
<tr>
<td>[A-Z]{1,3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;3&#x6B21;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]{1,3}</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;3&#x6B21;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[0-9]{1,3}/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( * ) &#x5339;&#x914D;0&#x6B21;&#x3001;1&#x6B21;&#x6216;&#x591A;&#x6B21;&#x524D;&#x9762;&#x539F;&#x5B50;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]*</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x3001;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[a-z]*</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x3001;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[A-Z]*</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x3001;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]*</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x3001;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[0-9]*/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( + ) &#x5339;&#x914D;1&#x6B21;&#x6216;&#x591A;&#x6B21;&#x524D;&#x9762;&#x539F;&#x5B50;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]+</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[a-z]+</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[A-Z]+</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]+</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;1&#x6B21;&#x6216;&#x591A;&#x6B21;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[0-9]+/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>(?) &#x5339;&#x914D;0&#x6B21;&#x6216;1&#x6B21;&#x524D;&#x9762;&#x539F;&#x5B50;</p>
<table>
<thead>
<tr>
<th><strong>&#x793A;&#x4F8B;</strong></th>
<th><strong>&#x63CF;&#x8FF0;</strong></th>
</tr>
</thead>
<tbody>
<tr>
<td>[0-9]?</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x6216;1&#x6B21;</td>
</tr>
<tr>
<td>[a-z]?</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x6216;1&#x6B21;</td>
</tr>
<tr>
<td>[A-Z]?</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x6216;1&#x6B21;</td>
</tr>
<tr>
<td>[0-9a-zA-Z]?</td>
<td>&#x5339;&#x914D;&#x4ECE;&#x6570;&#x5B57;&#x3001;&#x5C0F;&#x5199;&#x5B57;&#x6BCD;&#x3001;&#x5927;&#x5199;&#x5B57;&#x6BCD;&#x96C6;&#x5408;&#x8FDE;&#x7EED;&#x51FA;&#x73B0;0&#x6B21;&#x6216;1&#x6B21;</td>
</tr>
</tbody>
</table>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/[0-9]?/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><hr>
<h3 class="mume-header" id="%E5%9B%9B-%E9%A2%84%E5%AE%9A%E4%B9%89%E5%AD%97%E7%AC%A6">&#x56DB;&#x3001;&#x9884;&#x5B9A;&#x4E49;&#x5B57;&#x7B26;</h3>

<p>\d &#x5339;&#x914D;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5341;&#x8FDB;&#x5236;&#x6570;</p>
<ul>
<li>&#x7B49;&#x4EF7;&#x4E8E; [0-9]</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\d/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\D &#x5339;&#x914D;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x9664;&#x5341;&#x8FDB;&#x5236;&#x4EE5;&#x5916;&#x7684;&#x5B57;&#x7B26;</p>
<ul>
<li>&#x7B49;&#x4EF7;&#x4E8E; [^0-9]</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\D/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\w &#x5339;&#x914D;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5B57;&#x6BCD;/&#x6570;&#x5B57;/&#x4E0B;&#x5212;&#x7EBF;&#x5B57;&#x7B26;</p>
<ul>
<li>&#x7B49;&#x4EF7;&#x4E8E; [0-9a-zA-Z_]</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\w/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\W &#x5339;&#x914D;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x9664;&#x5B57;&#x6BCD;/&#x6570;&#x5B57;/&#x4E0B;&#x5212;&#x7EBF;&#x4E4B;&#x5916;&#x7684;&#x5B57;&#x7B26;</p>
<ul>
<li>&#x7B49;&#x4EF7;&#x4E8E; [^0-9a-zA-Z_]</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\W/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\s &#x5339;&#x914D;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x7A7A;&#x767D;&#x5B57;&#x7B26;(&#x975E;&#x6253;&#x5370;)</p>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\s/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\S &#x5339;&#x914D;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x9664;&#x7A7A;&#x767D;&#x5B57;&#x7B26;&#x4EE5;&#x5916;&#x7684;&#x5B57;&#x7B26;</p>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/\S/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\b &#x5339;&#x914D;&#x5355;&#x8BCD;&#x8FB9;&#x754C;</p>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/ouyangke\b/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>\B &#x5339;&#x914D;&#x9664;&#x5355;&#x8BCD;&#x8FB9;&#x754C;&#x4EE5;&#x5916;&#x7684;&#x90E8;&#x5206;</p>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/yang\B/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><hr>
<h3 class="mume-header" id="%E4%BA%94-%E7%89%B9%E6%AE%8A%E5%AD%97%E7%AC%A6">&#x4E94;&#x3001;&#x7279;&#x6B8A;&#x5B57;&#x7B26;</h3>

<ul>
<li><strong>&#x7279;&#x6B8A;&#x5B57;&#x7B26;&#x9700;&#x8981;&#x5728;&#x7B26;&#x53F7;&#x524D;&#x9762;&#x589E;&#x52A0;\&#x8F6C;&#x4E49;</strong></li>
<li><strong>&#x9700;&#x8F6C;&#x4E49;&#x7B26;&#x53F7;&#xFF1A; \  *  +  ?  .  |  ^  $  [  ]  (  )</strong></li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/ \+ /&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk * + ? . | ^ $ [ ] ( ) ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><hr>
<h3 class="mume-header" id="%E5%85%AD-%E5%88%86%E7%BB%84%E7%AC%A6">&#x516D;&#x3001;&#x5206;&#x7EC4;&#x7B26;</h3>

<ul>
<li>( ) &#x5339;&#x914D;&#x5176;&#x6574;&#x4F53;&#x4E3A;&#x4E00;&#x4E2A;&#x539F;&#x5B50;[&#x6A21;&#x5F0F;&#x5355;&#x5143;]&#xFF0C;&#x5373;&#x591A;&#x4E2A;&#x539F;&#x5B50;&#x7EC4;&#x6210;&#x7684;&#x5927;&#x539F;&#x5B50;</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/(&#x6B27;&#x9633;&#x514B;|&#x6731;&#x8001;&#x5E08;)|([0-9])/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;&#x6211;&#x662F;&#x6B27;&#x9633;&#x514B; &#x6211;&#x662F;&#x6731;&#x8001;&#x5E08; asdfsdf212fdhdfgh54674fghjfghjk78907dfghdfghdfgh&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><hr>
<h3 class="mume-header" id="%E4%B8%83-%E7%95%8C%E5%AE%9A%E7%AC%A6">&#x4E03;&#x3001;&#x754C;&#x5B9A;&#x7B26;</h3>

<blockquote>
<p>/ / &#x7B26;&#x53F7;&#x662F;&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x7684;&#x754C;&#x5B9A;&#x7B26;&#xFF0C;&#x91CC;&#x9762;&#x5305;&#x88F9;&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x3002;</p>
</blockquote>
<hr>
<h3 class="mume-header" id="%E5%85%AB-%E4%BF%AE%E6%AD%A3%E7%AC%A6%E5%9C%A8%E7%95%8C%E5%AE%9A%E7%AC%A6%E5%90%8E%E9%9D%A2">&#x516B;&#x3001;&#x4FEE;&#x6B63;&#x7B26;&#xFF08;&#x5728;&#x754C;&#x5B9A;&#x7B26;&#x540E;&#x9762;&#xFF09;</h3>

<blockquote>
<p>&#x591A;&#x4E2A;&#x4FEE;&#x6B63;&#x7B26;&#x53EF;&#x4EE5;&#x7EC4;&#x5408;&#x5728;&#x4E00;&#x8D77;&#x4F7F;&#x7528;</p>
</blockquote>
<p>( U )   &#x8868;&#x793A;&#x53D6;&#x6D88;&#x8D2A;&#x5A6A;&#x6A21;&#x5F0F;</p>
<ul>
<li>&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x6709;&#xFF1A;&#x8D2A;&#x5A6A;&#x6A21;&#x5F0F;&#x548C;&#x61D2;&#x60F0;&#x6A21;&#x5F0F;</li>
<li>&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x9ED8;&#x8BA4;&#x662F;&#x8D2A;&#x5A6A;&#x6A21;&#x5F0F;</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;1&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/ou.*/&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;2&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/ou.*/U&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk ouyangke ouyangke zhulaoshi zhulaoshi&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( i )   &#x8868;&#x793A;&#x548C;&#x6A21;&#x5F0F;&#x8FDB;&#x884C;&#x5339;&#x914D;&#x65F6;&#x5FFD;&#x7565;&#x5927;&#x5C0F;&#x5199;</p>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/ouyangke/i&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk OUYANGKE OUYANGKE ZHULAOSHI ZHULAOSHI&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( s )   &#x88AB;&#x5339;&#x914D;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x5C06;&#x89C6;&#x4E3A;&#x4E00;&#x884C;&#x6765;&#x770B;&#xFF0C;&#x5305;&#x62EC;&#x6362;&#x884C;&#x7B26;&#xFF0C;&#x6362;&#x884C;&#x7B26;&#x5C06;&#x88AB;&#x89C6;&#x4E3A;&#x666E;&#x901A;&#x5B57;&#x7B26;&#x4E32;&#x3002;</p>
<ul>
<li>( . ) &#x62EC;&#x53F7;&#x91CC;&#x7684;&#x5339;&#x914D;&#x7B26;&#xFF0C;&#x5339;&#x914D;&#x9664;&#x6362;&#x884C;&#x7B26;&#x4E4B;&#x5916;&#x7684;&#x4EFB;&#x610F;&#x4E00;&#x4E2A;&#x5B57;&#x7B26;</li>
</ul>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/OUYANGKE./s&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk\n OUYANGKE
OUYANGKE
ZHULAOSHI ZHULAOSHI&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><p>( x )   &#x6A21;&#x5F0F;&#x4E2D;&#x7684;&#x7A7A;&#x767D;&#x5FFD;&#x7565;&#x4E0D;&#x8BA1;</p>
<blockquote>
<p><strong>&#x4EE3;&#x7801;&#x793A;&#x4F8B;&#xFF1A;</strong></p>
</blockquote>
<pre data-role="codeBlock" data-info="php" class="language-php">    <span class="token variable">$pattem</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;/   0
    0
    0/x&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$subject</span> <span class="token operator">=</span> <span class="token single-quoted-string string">&apos;a11112222333344445555666677778888999900000 aaabbbcccdddeeefffggghhhiiijjjjkkkk\n OUYANGKE OUYANGKE ZHULAOSHI ZHULAOSHI&apos;</span><span class="token punctuation">;</span>
    <span class="token variable">$a</span> <span class="token operator">=</span> <span class="token function">preg_match_all</span><span class="token punctuation">(</span><span class="token variable">$pattem</span><span class="token punctuation">,</span><span class="token variable">$subject</span><span class="token punctuation">,</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$a</span><span class="token punctuation">)</span><span class="token punctuation">;</span>   <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x6B21;&#x6570;</span>
    <span class="token function">var_dump</span><span class="token punctuation">(</span><span class="token variable">$matches</span><span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// &#x8F93;&#x51FA;&#x5339;&#x914D;&#x7ED3;&#x679C;</span>
</pre><h3 class="mume-header" id="%E4%B9%9D-%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F%E4%BC%98%E5%85%88%E7%BA%A71%E7%BA%A7%E6%9C%80%E5%A4%A7">&#x4E5D;&#x3001;&#x6B63;&#x5219;&#x8868;&#x8FBE;&#x5F0F;&#x4F18;&#x5148;&#x7EA7;&#xFF08;1&#x7EA7;&#x6700;&#x5927;&#xFF09;</h3>

<table>
<thead>
<tr>
<th>&#x7EA7;&#x522B;</th>
<th style="text-align:center">&#x7B26;&#x53F7;</th>
<th>&#x89E3;&#x91CA;</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td style="text-align:center">\</td>
<td>&#x8F6C;&#x4E49;&#x5B57;&#x7B26;</td>
</tr>
<tr>
<td>2</td>
<td style="text-align:center">( )&#x3001; ( ?: )&#x3001; ( ?= )&#x3001; [ ]&#x3001;</td>
<td>&#x6A21;&#x5F0F;&#x5355;&#x5143;&#x4E0E;&#x539F;&#x5B50;&#x8868;</td>
</tr>
<tr>
<td>3</td>
<td style="text-align:center">*&#x3001; +&#x3001; ?&#x3001; {n}&#x3001; {n,}&#x3001; {n,m}</td>
<td>&#x91CD;&#x590D;&#x5339;&#x914D;</td>
</tr>
<tr>
<td>4</td>
<td style="text-align:center">^&#x3001; $&#x3001; \b&#x3001; \B</td>
<td>&#x8FB9;&#x754C;&#x5339;&#x914D;</td>
</tr>
<tr>
<td>5</td>
<td style="text-align:center">|</td>
<td>&#x6A21;&#x5F0F;&#x9009;&#x62E9;</td>
</tr>
</tbody>
</table>

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